Both have a look for dune runner that will show the lift effect of sand
dunes.

The trees are swirling indicating the rise in the sand dunes is causing air
disturbance the clouds also indicate convection is occurring the fact he is
airborne confirms it.

wrote in message
ups.com...
Is this a thermal or is it ridge lift? Be patient as it takes time to
load.

http://video.tododo.com/airtime/airt...v9_320x240.wmv